<template>
  <div class="login">
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form">
      <h3 class="title">果园大件码头智慧工地1.0</h3>
      <el-form-item prop="username">
        <el-input v-model="loginForm.username" type="text" auto-complete="off" placeholder="账号">
          <svg-icon slot="prefix" icon-class="user" class="el-input__icon input-icon" />
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input
          v-model="loginForm.password"
          type="password"
          auto-complete="off"
          placeholder="密码"
          @keyup.enter.native="handleLogin"
        >
          <svg-icon slot="prefix" icon-class="password" class="el-input__icon input-icon" />
        </el-input>
      </el-form-item>
      <el-form-item prop="code">
        <el-input
          v-model="loginForm.code"
          auto-complete="off"
          placeholder="验证码"
          style="width: 63%"
          @keyup.enter.native="handleLogin"
        >
          <svg-icon slot="prefix" icon-class="validCode" class="el-input__icon input-icon" />
        </el-input>
        <div class="login-code">
          <img :src="codeUrl" @click="getCode" class="login-code-img"/>
        </div>
      </el-form-item>
      <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
      <el-form-item style="width:100%;">
        <el-button
          :loading="loading"
          size="medium"
          type="primary"
          style="width:100%;"
          @click.native.prevent="handleLogin"
        >
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </el-button>
      </el-form-item>
    </el-form>
    <!--  底部  -->
    <div class="el-login-footer">
       <img src="../assets/image/login_bottom.png" align=absmiddle>© CHONGQING JIAOTONG UNIVERSITY</img>
      <!--<span>© CHONGQING JIAOTONG UNIVERSITY</span>-->
    </div>
  </div>
</template>

<script>import { getCodeImg } from "@/api/login";
import Cookies from "js-cookie";
import { encrypt, decrypt } from '@/utils/jsencrypt'

export default {
	name: "Login",
	data() {
		return {
			codeUrl: "",
			cookiePassword: "",
			loginForm: {
				username: "admin",
				password: "admin123",
				rememberMe: false,
				code: "1",
				uuid: ""
			},
			loginRules: {
				username: [{
					required: true,
					trigger: "blur",
					message: "用户名不能为空"
				}],
				password: [{
					required: true,
					trigger: "blur",
					message: "密码不能为空"
				}],
				code: [{
					required: true,
					trigger: "change",
					message: "验证码不能为空"
				}]
			},
			loading: false,
			redirect: undefined
		};
	},
	watch: {
		$route: {
			handler: function(route) {
				this.redirect = route.query && route.query.redirect;
			},
			immediate: true
		}
	},
	created() {
		this.getCode();
		this.getCookie();
	},
	methods: {
		getCode() {
			getCodeImg().then(res => {
				this.codeUrl = "data:image/gif;base64," + res.img;
				this.loginForm.uuid = res.uuid;
			});
		},
		getCookie() {
			const username = Cookies.get("username");
			const password = Cookies.get("password");
			const rememberMe = Cookies.get('rememberMe')
			this.loginForm = {
				username: username === undefined ? this.loginForm.username : username,
				password: password === undefined ? this.loginForm.password : decrypt(password),
				rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
			};
		},
		handleLogin() {
			this.$refs.loginForm.validate(valid => {
				if(valid) {
					this.loading = true;
					if(this.loginForm.rememberMe) {
						Cookies.set("username", this.loginForm.username, {
							expires: 30
						});
						Cookies.set("password", encrypt(this.loginForm.password), {
							expires: 30
						});
						Cookies.set('rememberMe', this.loginForm.rememberMe, {
							expires: 30
						});
					} else {
						Cookies.remove("username");
						Cookies.remove("password");
						Cookies.remove('rememberMe');
					}
					this.$store
						.dispatch("Login", this.loginForm)
						.then(() => {
							this.$router.push({
								path: this.redirect || "/"
							});
						})
						.catch(() => {
							this.loading = false;
							this.getCode();
						});
				}
			});
		}
	}
};</script>

<style rel="stylesheet/scss" lang="scss">.login {
	display: flex;
	justify-content: center;
	align-items: center;
	height: 100%;
	/*background-image: url("../assets/image/login-background.jpg");*/
	background-image: url("../assets/image/background.png");
	background-size: cover;
}

.title {
	margin: 0px auto 30px auto;
	text-align: center;
	color: #707070;
}

.login-form {
	border-radius: 6px;
	background: #ffffff;
	width: 400px;
	padding: 25px 25px 5px 25px;
	.el-input {
		height: 38px;
		input {
			height: 38px;
		}
	}
	.input-icon {
		height: 39px;
		width: 14px;
		margin-left: 2px;
	}
}

.login-tip {
	font-size: 13px;
	text-align: center;
	color: #bfbfbf;
}

.login-code {
	width: 33%;
	height: 38px;
	float: right;
	img {
		cursor: pointer;
		vertical-align: middle;
	}
}

.el-login-footer {
	height: 40px;
	line-height: 40px;
	position: fixed;
	bottom: 0;
	width: 100%;
	text-align: center;
	color: #fff;
	font-family: Arial;
	font-size: 12px;
	letter-spacing: 1px;
}

.login-code-img {
	height: 38px;
}</style>
